Plaesiomys

Plaesiomys is a genus of extinct lamp shells belonging to the family Plaesiomyidae.

Plaesiomys

Hectonichus · CC BY-SA 4.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

On record

Recorded, not inferred
Sits inside
PlaesiomyinaePBDB
Diet
suspension feederPBDB, for Plaesiomyidae
Life habit
epifaunalPBDB, for Plaesiomyidae
Motility
stationary, attachedPBDB, for Plaesiomyidae
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 15 million years on record.

The record covers at least 461.1 Mya to 445.2 Mya. No occurrence read is dated outside 471.3 Mya to 432.9 Mya.

Ordovician — about 292 of 293 occurrencesOrdovicianSilurian — about 1 of 293 occurrencesSilurian472–471 Mya — about 0.1 occurrences471–469 Mya — about 0.2 occurrences469–468 Mya — about 0.2 occurrences468–467 Mya — about 0.4 occurrences467–465 Mya — about 0.4 occurrences465–464 Mya — about 0.4 occurrences464–463 Mya — about 0.4 occurrences463–461 Mya — about 0.4 occurrences461–460 Mya — about 0.6 occurrences460–459 Mya — about 0.6 occurrences459–457 Mya — about 6 occurrences457–456 Mya — about 9 occurrences456–455 Mya — about 9 occurrences455–453 Mya — about 10 occurrences453–452 Mya — about 13 occurrences452–451 Mya — about 18 occurrences451–449 Mya — about 64 occurrences449–448 Mya — about 49 occurrences448–447 Mya — about 45 occurrences447–445 Mya — about 44 occurrences445–444 Mya — about 13 occurrences444–443 Mya — about 10 occurrences443–441 Mya — about 0.1 occurrences441–440 Mya — about 0.1 occurrences440–439 Mya — about 0.1 occurrences439–437 Mya — about 0.1 occurrences437–436 Mya — about 0.1 occurrences436–435 Mya — about 0.1 occurrences435–433 Mya — about 0.1 occurrences433–432 Mya — about 0.0 occurrences461.1 Mya445.2 Mya472.1 Mya432.1 Mya

293 occurrences of Plaesiomys on record, most of them in the Ordovician. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.

When

293 occurrences

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.

Found in

72 formations

Liberty — 39.42°N, 85.01°WLiberty — 38.20°N, 85.57°WLiberty — 39.49°N, 84.95°WLiberty — 39.34°N, 84.95°WLiberty — 39.48°N, 84.06°WLiberty — 39.48°N, 84.05°WLiberty — 38.78°N, 85.37°WLiberty — 39.08°N, 85.25°WLiberty — 39.64°N, 84.96°WLiberty — 39.64°N, 84.94°WVaureal — 49.81°N, 64.43°WVaureal — 49.77°N, 63.64°WVaureal — 49.91°N, 64.24°WVaureal — 49.83°N, 64.28°WVaureal — 49.63°N, 63.20°WVaureal — 49.63°N, 63.78°WVaureal — 49.73°N, 63.83°WVaureal — 49.46°N, 62.35°WVaureal — 49.46°N, 62.31°WVaureal — 49.75°N, 63.14°WVaureal — 49.80°N, 63.89°WVaureal — 49.61°N, 62.60°WVaureal — 49.58°N, 62.51°WVaureal — 49.79°N, 63.24°WVaureal — 49.60°N, 62.69°WVaureal — 49.76°N, 63.06°WKõrgessaare — 59.13°N, 24.47°EKõrgessaare — 58.98°N, 22.46°EKõrgessaare — 59.17°N, 24.75°EKõrgessaare — 59.03°N, 23.22°EKõrgessaare — 59.02°N, 23.14°EKõrgessaare — 59.02°N, 23.61°EKõrgessaare — 58.95°N, 22.43°EKõrgessaare — 58.98°N, 22.81°EKõrgessaare — 59.27°N, 25.85°EDulankara — 43.75°N, 75.25°EDulankara — 43.72°N, 75.31°EScales Shale — 44.98°N, 93.27°WScales Shale — 42.00°N, 90.50°WScales Shale — 43.05°N, 91.83°WScales Shale — 43.08°N, 91.57°WScales Shale — 43.22°N, 91.78°WScales Shale — 43.12°N, 91.53°WScales Shale — 43.37°N, 92.00°WWhitewater — 39.00°N, 84.00°WWhitewater — 38.00°N, 85.50°WWhitewater — 39.39°N, 83.93°WWhitewater — 37.75°N, 84.30°WWhitewater — 38.86°N, 83.50°WWhitewater — 38.94°N, 83.64°WWhitewater — 39.54°N, 84.75°WWhitewater — 39.61°N, 84.97°WWhitewater — 39.68°N, 84.23°WWhitewater — 39.76°N, 84.90°WEllis Bay — 49.72°N, 63.34°WEllis Bay — 49.81°N, 64.01°WEllis Bay — 49.33°N, 61.89°WEllis Bay — 49.63°N, 63.78°WEllis Bay — 49.74°N, 63.88°WEllis Bay — 49.38°N, 62.08°WEllis Bay — 49.45°N, 62.30°WEllis Bay — 49.84°N, 64.45°WEllis Bay — 49.55°N, 62.68°WWaynesville — 39.48°N, 84.06°WWaynesville — 39.07°N, 85.07°WWaynesville — 39.07°N, 85.25°WWaynesville — 39.40°N, 84.56°WWelling — 34.51°N, 96.97°WWelling — 34.60°N, 96.59°WAmadjuak — 63.72°N, 68.97°WAmadjuak — 68.77°N, 81.22°WAmadjuak — 63.75°N, 68.95°WLower Whitewater — 39.48°N, 84.06°WLower Whitewater — 39.39°N, 83.93°WLower Whitewater — 38.91°N, 83.55°WLower Whitewater — 39.58°N, 84.80°WLower Whitewater — 39.83°N, 84.89°WDenley Limestone — 43.21°N, 75.46°WDenley Limestone — 43.88°N, 75.49°WVerulam — 44.50°N, 78.58°WVerulam — 44.45°N, 78.70°WVerulam — 44.52°N, 78.97°WVerulam — 44.48°N, 78.95°WVerulam — 44.51°N, 79.19°WBobcaygeon — 44.53°N, 78.55°WBobcaygeon — 44.50°N, 79.20°WBobcaygeon — 44.60°N, 79.00°WKilley Bridge — 54.60°N, 6.88°WAleman — 31.99°N, 106.50°WAleman — 31.20°N, 104.77°WAleman — 32.42°N, 107.58°WVauréal — 49.67°N, 63.00°WMoe — 59.26°N, 26.00°EMoe — 58.67°N, 24.57°EMoe — 59.03°N, 23.65°EFremont — 38.00°N, 105.00°WFernvale — 36.36°N, 86.76°WFernvale — 36.09°N, 86.99°WFernvale — 35.22°N, 87.01°WWhittaker — 62.00°N, 127.00°WWhittaker — 62.50°N, 125.25°WViola Springs — 35.91°N, 97.73°WViola Springs — 34.60°N, 96.59°WViola Springs — 34.51°N, 96.97°WAdvance — 56.02°N, 123.53°WAdvance — 56.18°N, 123.45°WAdvance — 56.03°N, 123.35°WScales — 43.52°N, 91.77°WScales — 43.80°N, 92.00°W

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The named rock units Plaesiomys has been recovered from, largest first. Drawn where the rock is now, not where it formed. 48 further formations hold fewer occurrences each and are not listed. 33 occurrences have no formation on record, which is common for older literature.

Plaesiomys and its relatives

Ordovician

Where Plaesiomys and its relatives were recorded in the Ordovician.

Found in the same rock

1,197 taxa

The Paleobiology Database records 275 sites for Plaesiomys, and this reads 240 of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.

Entered from

70 references

Each of the 293 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 58 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Plaesiomys

Credit
Hectonichus
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Plaesiomys was found in MorphoSource and Sketchfab.

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPlaesiomyinae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Hall and Clarke 1892)